<template>
  <div>
    <el-container style="height: 500px; border: 1px solid #eee">
      <el-aside width="200px" style="background-color: rgb(238, 241, 246)">

        <el-menu :default-openeds="['1']">
          <el-submenu index="1">
            <template slot="title"><i class="el-icon-message"></i>导航一</template>
            <el-menu-item-group>
              <el-menu-item index="1-1" @click="toUser">用户列表</el-menu-item>
            </el-menu-item-group>
          </el-submenu>


          <el-submenu index="2">
            <template slot="title"><i class="el-icon-menu"></i>导航二</template>
            <el-menu-item-group>
              <el-menu-item index="2-1" @click="toStudent">学生列表</el-menu-item>
            </el-menu-item-group>
          </el-submenu>


          <el-submenu index="3">
            <template slot="title"><i class="el-icon-setting"></i>导航三</template>
            <el-menu-item-group>
              <el-menu-item index="3-1">选项1</el-menu-item>
            </el-menu-item-group>
          </el-submenu>

        </el-menu>
      </el-aside>

      <el-container>
        <el-header style="text-align: right; font-size: 12px">
          <el-dropdown>
            <i class="el-icon-setting" style="margin-right: 15px"></i>
            <el-dropdown-menu slot="dropdown">
              <el-dropdown-item>查看</el-dropdown-item>
              <el-dropdown-item>新增</el-dropdown-item>
              <el-dropdown-item>删除</el-dropdown-item>
            </el-dropdown-menu>
          </el-dropdown>
          <span>操作</span>
        </el-header>


        <el-main>
          <router-view/>
        </el-main>

      </el-container>
    </el-container>
  </div>
</template>



<script>
export default {

  data() {
    return {
      isCollapsed: true
    }
  },

  methods: {
    toUser(){
      this.$router.push("/menu/user") //回到首页
    },
    toStudent(){
      this.$router.push("/menu/student")
    },

  }
};
</script>


<style scoped>
.el-header {
  background-color: #B3C0D1;
  color: #333;
  line-height: 60px;
}

.el-aside {
  color: #333;
}
</style>
